Question

21. An antique phonograph rotates at 33 1/3rpm.
a) find its angular velocity in rad/s
b)find the speed of a point 5cm from the center
c) if the record starts from rest and accelerates with a constant
angular acceleration to 33 1/3rpm in 2s, find the angular
acceleration and the angle turned through, in degrees and
revolutions
d) if the phonograph shuts off and the player decelerates uniformly
from 33 1/3 to a stop in 2 complete revolutions, find the angular
acceleration and the time it takes to come to a stop